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History and Introduction of Dental materials
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History and Introduction of Dental materials

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dental materials intro

dental materials intro

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  • filling material ,denture ,bridge and crown
  • Transcript

    • 1. Dental materials Dr mumtaz ul islam 11/9/2013 1
    • 2. What are dental materials • Materials • Dental materials (prevention and treatment) • Why we study dental materials (to provide above mentioned benefits) • What is its importance (better you know better you serve) 11/9/2013 2
    • 3. Types of dental materials 1 preventive or therapeutic 2 restorative a. Primary (to slow down the process of dental ailments) b. Secondary (to restore the diseased structure) overlap may occur in preventive and restorative 3 auxiliary ( helper) 11/9/2013 3
    • 4. Why to study dental materials 1 behavior of the material 2 handling of material 3 evaluation of the problem and its treatment 4 patient education 11/9/2013 4
    • 5. Behavior • Sealants prevent caries • Periodontal problems can be initiated by an over hanged filling • Instruments storage in a wet condition can leads to rust and corrosion • Sterilization will not be achieved if debris is present over instruments • Properties – Physical properties – Chemical properties 11/9/2013 5
    • 6. Handling of materials • Liquid to powder ratio • Proper mixing • Proper placement of material 11/9/2013 6
    • 7. evaluation of the problem and its treatment • Patients complaint • Recognition of Material present in oral cavity • Treatment protocol 11/9/2013 7
    • 8. Education of the patient • • • • Why composite filling Why amalgam Why glass ionomer Crown or filling 11/9/2013 8
    • 9. Replacement material • For enamel and dentine different types of cements ,amalgam and composite filling materials • For pulp gutta percha and sealers • For missing teeth and gingival tissues crowns bridges and dentures 11/9/2013 9
    • 10. History of dental materials From ancient times to 1700s • • • • • • Replacement of teeth Gold Dentistry mean esthetics not function (a) Ivory, which was carved (b) Porcelain, which was fired into tooth shapes (c) Wax and gypsum, which were used for impressions and models • (d) Zinc oxide–eugenol and zinc phosphate,which evolved as fillings and cements to“glue” the restoration to the tooth 11/9/2013 10
    • 11. Dental materials in 1800s • Amalgam, a silver filling material, was widely accepted and frequently used. • Porcelain was also used for inlays and crowns. Source: clinical aspects of dental materials by Marcia Gladwin Michael Bagby. 11/9/2013 11
    • 12. Dental materials in 20th century • Casting techniques were esteblished • Alloys of gold, titanium, chromium with cobalt and with nickle were made • Cast metals were used for crowns bridges and partial dentures • Polymers and composites were also introduced 11/9/2013 12
    • 13. Dental materials and 21st century • New ceramic materials and technologies are coming day by day • Basic concepts and uses are same, unchanged 11/9/2013 13
    • 14. Selection of dental materials • Manufacturers or suppliers provide informations • How much reliable ? Standards which will be discussed • Personel prefrence and experience • Experiences of seniors and collegues 11/9/2013 14
    • 15. Thank you 11/9/2013 15

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